This process works for 5th and 5.5th gens. 4th gens won't properly "save" the advancement.You can advance your timing to 17* BTDC. You HAVE TO run supreme unleaded after this, otherwise you may have spark knock.
You will only gain better throttle response and a fraction of accelleration.
Advancing your timing with Nissan’s CONSULT II tool.
For those of you with dealerships like mine (the tech may need a little help)
On CONSULT II main menu screen choose “ENGINE”
Check out any codes that are stored, then clear codes
Press “WORK SUPPORT”
Press “TARGET IGN TIMING”
Press “UP” x2 for 2 degrees, correction which you should be able to see
Press “UPDATE”
Press “BACK”
On the “WORK SUPPORT” screen find “IDLE LEARN“
Perform this, since your idle will have changed.
294 HP and 305 lb/ft TQ 
Bone stock aside of a Cobb catted Down Pipe and
an Accessport tune done by Tim Bailey at Surgeline
